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$FreeBSD: stable/10/share/man/man4/gpioled.4 266096 2014-05-14 23:33:38Z loos $
.Dd November 5, 2013 .Dt GPIOLED 4 .Os .Sh NAME .Nm gpioled .Nd GPIO led generic device driver .Sh SYNOPSIS .Cd "device gpio" .Cd "device gpioled"
p This driver attaches a .Xr led 4 device to a GPIO pin. .Sh DESCRIPTION The .Em gpioled driver provides a glue to attach a .Xr led 4 compatible device to a GPIO pin. Each led on the system has a
a name which is used to export a device in
a /dev/led/<name> . The GPIO pin can then be controlled by writing to this device as described on .Xr led 4 .
p On a hint based system, like .Li MIPS , these values are configureable for .Nm : l -tag -width ".Va hint.gpioiic.%d.atXXX" t Va hint.gpioled.%d.at The gpiobus you are attaching to. Normally assigned to gpiobus0. t Va hint.gpioled.%d.name Arbitrary name of device in
a /dev/led/ to create for .Xr led 4 . t Va hint.gpioled.%d.pins Which pin on the GPIO interface to map to this instance. Please note that this mask should only ever have one bit set (any others bits - i.e., pins - will be ignored). .El .Sh SEE ALSO .Xr gpio 4 , .Xr led 4 , .Xr gpioiic 4 .Sh HISTORY The .Nm manual page first appeared in .Fx 11.0 . .Sh AUTHORS This manual page was written by .An Luiz Otavio O Souza .